CN209400589U - Modular power factor adjustable type loading device - Google Patents
Modular power factor adjustable type loading device Download PDFInfo
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- CN209400589U CN209400589U CN201822087286.8U CN201822087286U CN209400589U CN 209400589 U CN209400589 U CN 209400589U CN 201822087286 U CN201822087286 U CN 201822087286U CN 209400589 U CN209400589 U CN 209400589U
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Abstract
The utility model proposes a kind of modular power factor adjustable type loading devices, two groups of IPS components including generator and its connection, and the control structure on two groups of IPS components is set, the control structure includes voltage and current regulator, power-factor regulator；Two groups of IPS components are identical and mirror image connects, respectively the IPS component A of the size of the power factor attribute and load current of adjusting simulation load, and complete the IPS component B that the electric energy of DC terminal is fed back to power grid by active inversion.The utility model uses the technical problem that AFE technology solves power factor and current load is continuously adjusted, and simplifies special power generator experiment process.Multiple DC series, DC parallel technology can be used in modular IPS, under the input of identical AC power source, form more specification direct current outputs.
Description
Technical field
The utility model relates to electrical generator fields, particularly relate to a kind of modular power factor adjustable type loading device.
Background technique
In some aviations, energy device, generator is specific customization.When carrying out equipment development, delivery test, need
Load test is carried out to generating equipment, so that its operating current and power factor is reached particular value, to simulate it in use environment
In actual condition.Existing common practice is to be loaded directly into method, i.e., terminates multiple groups resistance, inductance, capacitor by exporting at it
Etc. real loads, its different group is switched by contactor, and be combined, to change the size of current and function of its load
Rate factor.The group of these load elements, switching sequence are controlled by computer program.
Existing method has the disadvantage in that
1. equipment volume is huge, component devices are complicated, in order to reach certain loading accuracy, need multiple groups resistance, capacitor,
Inductance is combined, and systematic comparison is complicated；
2. being unable to complete the operating condition of electrodeless adjustment.It is all to pass through contact no matter to electric current or to the adjusting of power factor
Device has grade adjusting.Although can be finely divided by different coding mode, 2% precision, especially power factor are generally reached,
Cost is larger.
3. fever is serious.It is consumed by the exothermic energy of test specimen by real load, forms huge fever, it is less economical.
4. group has current break when adjusting, there is large effect to the dynamic result of test.
5. the drift of parameter.Resistance can change with the variation of temperature, and capacitor can use time change with equipment, this
Resulting in loading accuracy can not stablize.
It, can not frequent quick response 6. response speed is slow.
Utility model content
The utility model proposes a kind of modular power factor adjustable type loading devices, can simplify special power generator test
Process under the input of identical AC power source, forms more specification direct current outputs.
The technical solution of the utility model is achieved in that a kind of modular power factor adjustable type loading device, packet
Include two groups of IPS components of generator and its connection, and the control structure being arranged on two groups of IPS components, the control structure
Including voltage and current regulator, power-factor regulator；Two groups of IPS components are identical and mirror image connects, and respectively adjust
The IPS component A of the power factor attribute of simulation load and the size of load current is saved, and completes active inversion for the electricity of DC terminal
It can be fed back to the IPS component B of power grid, the IPS component A connection generator, IPS component B connects power grid, institute by LCL filter
Single group IPS is stated using fully-controlled type switching device IGBT.
Preferably, the single group IPS is made of three phase full bridge, DC side setting connection intermediate capacitance exchanges side and straight
Stream side is all connected with the Hall sensor for carrying out the reading of current and voltage signals and sending into the adjuster being made of DSP.
Preferably, the IPS component A is directly connected to generator, IPS component B makes injection electricity in grid side connection setting
The current waveform of net is in the LCL filter at sinusoidal waveform.
Preferably, being equipped with DSP on the IPS component A and IPS component B, the DSP on IPS component A is voltage and current
Adjuster, the DSP on IPS component B are power-factor regulator.
Compared with the prior art, the advantages of the utility model are: using AFE technology solves power factor and electric current
The continuously adjustable technical problem of load, simplifies special power generator experiment process.Multiple direct current string can be used in modular IPS
Connection, DC parallel technology under the input of identical AC power source, form more specification direct current outputs.Without the high-precision of switching shock
Loading mode.Data-interface abundant (Ethernet, MODBUS) is provided, makes it possible that the automation of loading spectrum is tested.
Detailed description of the invention
Fig. 1 is the structural block diagram of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without creative efforts
The every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment: it is realized referring to Fig. 1, single group IPS using fully-controlled type switching device IGBT (insulated gate bipolar transistor)
Unsteady flow, using SVPWM algorithm.Core control function using DSP complete, control structure include voltage regulator, current regulator,
Power-factor regulator；It, can be by appropriate SVPWM mode, to the big of alternating current due to using controllable devices IGBT
Small and phase is controlled, and sets the phase angle between voltage and current sinusoidal waveform in a certain range as needed,
I.e. power factor is positive and negative adjustable for midpoint with 1, so that the simulation part throttle characteristics for making generator machine both can be capacitive, can also be in
It is now perception.
Mirror image connection is done by two groups of identical IPS components, the power factor of simulation load is adjusted by IPS component A
The size of attribute and load current；Active inversion is completed by IPS component B 2, the electric energy of DC terminal is fed back to power grid, it can also
Connect resistive load consumption.
Single group IPS is made of three phase full bridge, DC side setting connection intermediate capacitance.Exchange side and DC side are all connected with Hall
Sensor, carries out the reading of current and voltage signals, and send into the adjuster being made of DSP.IPS component A is directly connected to generate electricity
Machine, IPS component B connect power grid by LCL filter, and making the current waveform for injecting power grid is in that can meet injection at sinusoidal waveform
Electric energy to power grid meets the related THD standard of country.
Due to the modular construction of IPS, connect the mirror image between IPS, be in parallel, series connection it is more convenient, it is easier to form
The high-power loading system of voltage range 50-2000V, current range 0-1000A.
Data-interface abundant (Ethernet, MODBUS) is provided, makes it possible that the automation of loading spectrum is tested.
It solves the continuously adjustable technical problem of power factor and current load using AFE technology, simplifies extraordinary hair
Motor test process.Multiple DC series, DC parallel technology can be used in modular IPS, under the input of identical AC power source,
Form more specification direct current outputs.High-precision loading mode without switching shock.There is provided data-interface abundant (Ethernet,
MODBUS), make it possible that the automation of loading spectrum is tested.
This technology is applied on certain aerogenerator testing stand, solves the test essence of the such test of owner at one stroke
Degree, the continuity of output, dynamic stability, the covering power of capacity, Static State Index etc. have fully met wanting for national military standard
It asks.
In order to solve the defect of existing loading technique, meet power generation test system to load current, power factor regulation
Demand, our development and designs go out the stepless adjustable type loading device of Wide Band Power factor, can meet the examination of a variety of AC power plants
Test operating condition.The present apparatus has the following characteristics that
1. adaptation frequency is wide, the supply frequency from 5HZ to 400HZ be can be used.
2. load current is continuously adjustable, power factor is continuously adjusted between ± 1, it can reaches pure capacitive or pure sense
The load characteristic of property.
3. flexible system structure, can both be overlapped to form feedback type system, energy is fed back into power grid, can also be consumed
On resistance.
4. load application precision is high, and reachable ± 0.2%.
5. load current and power factor (PF) quickly can frequently be adjusted, up to 25ms/100A.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (4)
1. a kind of modular power factor adjustable type loading device, it is characterised in that: two groups of IPS including generator and its connection
Component, and the control structure being arranged on two groups of IPS components, the control structure include voltage and current regulator, power because
Number adjuster；Two groups of IPS components are identical and mirror image connects, respectively the power factor attribute of adjusting simulation load and
The IPS component A of the size of load current, and the IPS component B that the electric energy of DC terminal is fed back to power grid by active inversion is completed, it is described
IPS component A connection generator, IPS component B connect power grid by LCL filter, and the single group IPS uses fully-controlled type derailing switch
Part IGBT.
2. modular power factor adjustable type loading device according to claim 1, it is characterised in that: the single group IPS
It is made of three phase full bridge, DC side setting connection intermediate capacitance, exchanges side and DC side is all connected with and carries out current and voltage signals
The Hall sensor for reading and sending into the adjuster being made of DSP.
3. modular power factor adjustable type loading device according to claim 2, it is characterised in that: the IPS component A
It is directly connected to generator, IPS component B makes the current waveform for injecting power grid be in the LCL at sinusoidal waveform in grid side connection setting
Filter.
4. modular power factor adjustable type loading device according to claim 3, it is characterised in that: the IPS component A
With DSP is equipped on IPS component B, the DSP on IPS component A is voltage and current regulator, the DSP on IPS component B be power because
Number adjuster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822087286.8U CN209400589U (en) | 2018-12-11 | 2018-12-11 | Modular power factor adjustable type loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822087286.8U CN209400589U (en) | 2018-12-11 | 2018-12-11 | Modular power factor adjustable type loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209400589U true CN209400589U (en) | 2019-09-17 |
Family
ID=67894466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822087286.8U Active CN209400589U (en) | 2018-12-11 | 2018-12-11 | Modular power factor adjustable type loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209400589U (en) |
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2018
- 2018-12-11 CN CN201822087286.8U patent/CN209400589U/en active Active
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